Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6069f30ed3fa835…

MALICIOUS

PDF

76.7 KB Created: 2021-02-25 10:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cdf2fea9f4859b425bcfa11c4604b151 SHA-1: 42ab445fa6308aa7f424d0e216b621a409935a46 SHA-256: b6069f30ed3fa835633b2187717f0fe8d351fa7b3c5ebdb5d6ce0e5b83bcc91d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/award?keyword=skil+15-amp+7-1%252F4-in+corded+circular+saw+review In PDF document text
    • https://cdn.sqhk.co/xumirikebixo/gfrichf/commando_raids_world_war_2.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/eigifRi/zidegupo.pdfIn PDF document text
    • https://cdn.sqhk.co/kuluxasoge/9haXvIQ/vmware_horizon_client_login_failed.pdfIn PDF document text
    • http://dkblogin-de.best/1160666211oxxs0.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/letra_y_acordes_de_yo_sin_tu_amor_alicia_villarreal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389571/normal_5fdfc17f84e33.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/oOCV6jg/wabosefebesoxopobib.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/gg9jf7h/55750024492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446761/normal_603558cc0064a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486963/normal_600dff9c0df75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_601c72927727e.pdfIn PDF document text
    • https://cdn.sqhk.co/suvezadamut/jgiaaia/fitbit_charge_2_setup_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosigegu.onlinewebshop.net/costco_laptop_dell_precision_m6800_drivers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7A 5948 bytes
SHA-256: 877746e0a95189832e90562899df62761fb780c48d4fe83975bf8d2632fcab63
font_01_sfnt_off000102dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DD 10348 bytes
SHA-256: bc59a97ae4a1c8dbd70a5104be996f01006ec613c679e17be3ac7a05821a5d89

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